Hi there,
2 weeks ago i bought a Passport Leather Flip Case for my wife.
It has an adhesive tape on the back so you can stick the back of your phone there.
It worked perfectly till today that i had to change the case with a new one.
When i tried to re-stick it on my passport...pffff, nothing happened.
it's like there is no more glue.
Is there something that i do wrong or there is a problem with the tape??

I've removed my phone from the case about 20 times so far and it seems just as sticky as it ever was. I thought there was something about refreshing the adhesive but cannot recall what I read. This may sound silly, but did you remove the plastic film from the phone before you put it in the case? The film could be stuck to the adhesive causing the problem. I helped someone with her iPhone last year because flash photos weren't working well on her device. Turns out when she bought the phone, the salesperson put the case on without removing the shipping plastic from the back of the phone and it caused the flash to wash out her pictures. She had this problem for months.

After 8 hours I can tell you that it works perfectly. Probably I've bought a problematic one. The point is that on the box it says nothing about how you can use it again.
So for the next one who's going to have the same problem : make the sticky area wet, leave it for 30 seconds, stick your phone and left for a few minutes under pressure.....or hours :-)

I have a car mount which uses the same type of polymer to hold the phone. Over time it gathers dust which stops it holding and a wipe with a wet cloth cleans the dust off and it's good to go again. Would be interesting if someone on here is an industrial plastics chemist and could say what it is and how it works

The way those sticky thingy works is that it's sticky! So it sticks after everything.... including dust. Now imagine after removing it a few times, dust will collect on it. Once it's covered with dust, you're basically just trying to stick your passport on dust!

So usually what you need to do is to rinse it with running water, let it air dry and it will be sticky again!

I'd like to add that I too had the official BlackBerry case, I could never get the thing to close fully, even after a months use. I was also worried about the integrity of the sticky pad.
I eventually replaced it with one of these and never looked back.
The case clips into position, the leather is fantastic quality and the front flap closes with no issues. It too also uses the sleep magnet to switch off the screen. There is a thread about this case somewhere, just do a search using the brand name, StilGut. Hope this helps. Happy holidays everyone.